International Journal of Agricultural Sciences

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Field Performance of Maize (Zea mays L.) for Precision Nitrogen Management Under Drip Irrigated Condition


Affiliations
1 Department of Agronomy, University of Agricultural Sciences, G.K.V.K., Bengaluru (Karnataka), India
2 Zonal Agricultural Research Station, V.C. Farm, Mandya (Karnataka), India
     

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The field experiment was conducted at Zonal Agricultural Research Station, V.C. Farm, Mandya, University of Agricultural Sciences, Bengaluru during Kharif, 2014 to study the effect of precision nitrogen management on growth, yield attributes, yield and economics of drip irrigated maize. The experiment consisted of 9 treatments replicated thrice in RCBD design. Among the various treatments imposed, drip fertigation of nitrogen through SPAD sufficiency index of 95-100 per cent under paired row (90/30) recorded significantly higher growth and yield parameters. In addition, this treatment also recorded significantly higher kernel and stover yield (85.73 and 140.43 q ha-1, respectively), NUE (71.44 kg kg-1) and also net returns (Rs. 69634 ha-1) as compared to UAS (B) package with surface irrigation and normal spacing of 60×30 cm.

Keywords

Maize, Drip Irrigation, Precision N Management, LCC, SPAD Sufficiency Index.
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  • Field Performance of Maize (Zea mays L.) for Precision Nitrogen Management Under Drip Irrigated Condition

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Authors

P. Nagarjun
Department of Agronomy, University of Agricultural Sciences, G.K.V.K., Bengaluru (Karnataka), India
S. B. Yogananda
Zonal Agricultural Research Station, V.C. Farm, Mandya (Karnataka), India

Abstract


The field experiment was conducted at Zonal Agricultural Research Station, V.C. Farm, Mandya, University of Agricultural Sciences, Bengaluru during Kharif, 2014 to study the effect of precision nitrogen management on growth, yield attributes, yield and economics of drip irrigated maize. The experiment consisted of 9 treatments replicated thrice in RCBD design. Among the various treatments imposed, drip fertigation of nitrogen through SPAD sufficiency index of 95-100 per cent under paired row (90/30) recorded significantly higher growth and yield parameters. In addition, this treatment also recorded significantly higher kernel and stover yield (85.73 and 140.43 q ha-1, respectively), NUE (71.44 kg kg-1) and also net returns (Rs. 69634 ha-1) as compared to UAS (B) package with surface irrigation and normal spacing of 60×30 cm.

Keywords


Maize, Drip Irrigation, Precision N Management, LCC, SPAD Sufficiency Index.

References